Undulatory theory
[化] 波动说
🧩 词语组成解析
a. 波动的, 起伏的, 因波动引起的
🗣️ 情景例句
I have to go out and hand out fliers.
我要出去派传单。
You'll hurt yourself, if you don't take care.
你不专心的话，就会伤到你自己。
If we remain inveterate smokers, it is only because we have so often experienced the frustration that results from failure.
如果我们烟瘾大，戒不掉，那是因为屡戒屡败，失去信心。